Question

A person buys $25$ pens worth $250$, each of equal cost. He wants to keep $5$ pens for himself and sell the remaining to recover his money. What should be the price of each pen?

Answer 1

Cost Price of $25$ pens = $Rs.250$

$\therefore$Cost Price of $1$ pen $=\frac{250}{25}=Rs.10$

A.T.Q,

C.P of $25$ pens = S. P of $20$ pens

$\therefore$ S.P of $20$ pens $=Rs.250$

$\therefore$ S.P of $1$ pen $=Rs.\frac{250}{20}=Rs.12.50$